Sound-box for talking-machines.



No. 846,024.. PATENTED MAR. 5, 1907.

' E. DwGLEASON.

SOUND BOX FOR TALKING MACHINES. APPLICATION FILED JULY 26. 1902.

iiniirno Sills-IRS PATENT OFFICE.

EDWARD l). GLEASON, Oi PHILADELPHIA, PENNSYLVANIA,- ASSIGNOR, BY lllESNE ASSIGNMENTS, T VICTOR TALKING MACHINE COMPANY, OF

CAMDEN, NEW JERSEY, A OQRPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented. March 5, 1907.

Application filed July 26, 1902. Serial No. 117,134.

To Iii-U whom it may concern:

Be it known that l, EDWARD ll GLEASON, u citizen of the United States, residing in Philmlelphie, Pennsylvania, have invented certain llllPY'OVtlIlflIltS in Sound-Boxes for '"lell-zing-Bl u chines, of which the following is u specificatiim.

The object of my inventionv is to provide "'lus-lci'er of u tslhing-nuichine sound elastic connection or mounting llj. it certain amount of tension will ohm be imported to the diupl'lrugnl and be tter results in reproduction will be attained than when such elastic connection or mount ing not provided.

in the secoiupanying drawing, Figure 1 is u. sectional View of a tullting mcchine soundhox: construct-ed in accordance with inyinvenlion. l 2 end 3 are similar Views illusinuiug other embodiments ol the invention; and logs l, 5, and ii are front views of the sounddloiies shown in ligs. l, u, and respect, rely.

"llu' sound-hon has a tubular stem 1 with v15 hilg cd or cuoshaped end 2, containing the diu phrugin 3, the hitter being mounted in this portion of the sound-box in any available nuiuiicii in the present, iusluuco the dinphregzn is scaled upon an iuli-runl annular shoulue' in the 'poliiou :2 ol the sound-hon (swing and is relunuul in position thereon by un elastic ring l, which cugug'vs an internallygroowd portion ol the bEOtlllil-lHLL "ihe stylus-lever 5 projects through an opening in one side ol the ehlzu'gcd portion 2 of the souiuhhorc casing and is prm'idod with u dctucluihh- 1 vlus U, as usuul. thud slyluslcwr has all its inner end t prelerohl integral portion which is bent so as to he "upon the diuphrugm .l and has formed upon or sooured to it u projecting boss or lug 7, which is mounted upon an elastic rod or hur l5, crossing the sound-box casing outwardly beyond and in line withthe stylus-lever, the opposile ends of this elastic rod or her 8 being secured der a certain degree of tension, with the result that the reproduction of sound caused by the vibration of the diaphragm are clearer and more distinct than usual, there being an ab sence of collateral vibration such as would interfere with the distinct rendering of S01 11 s dling from the proper vibrations 0L l lmph rug-1n caused by the action ol the Wttl oi the undulating groove of the record upon stylus.

it i "eruhl'e in some cases to mount the lug 1 o; v .--;tylus--lever adjustably upon the elastic rod or our 8;, so that the inner end of the stylus-lever may be caused to bear upon different perilous the .lis.phrngm, the lug being secured to the spring in t different posiiions of adjustment by niesnsizl @Clll'lllfiscrew In that forni of sound-box shown in Figs. 2 and 5 two elastic hers 8 take the place oi the single her e of i l, the lug 7 of the stylus lever being uidcncd, so as to engage with both cl these bars, but the construction being otherwise similar to that of l ig. 1. ln carrying; out my invention, houever, it is not neccssury in all roses to mount the stylus-lever uircctly upon an elastic rod or her, as I find that good results can he attained by connect ing s spring to the inner end of the styluslcvcr and to that portion of the diaphragmtidfilllg opposite the portion through which the stylus-lever projects, an instance of this constructor) lacing shoun in l igs. 3 and 6, where H" ro u'cseuls such it spring connected at one end to the inner cnd ol' the st' 'lus-lei'er and at the other end to a threaded rod ll, which is engaged by u nut 12, the latter hearing upon the outer end oi a tubular stud or hoss ii; on the dinplu'ugin-msing, so as to provide for importing any desired degree of tension to the spring El i hon this iorm of spring connection'is adopted, the method of mounting the stylus-lever upon the dinphrugrn-cusing insy ho varied without deporting from my invention, the lever in the to the sound-l)oxcusing in unysuituhle munuer us, for instance by soldering or liruziug or by moons of clmnp-scrmuvs 9. The rod or but fl thus p'n'ividus an elastic mounting for tho stvlusdover and presses the inner end ol the hiticr agai st the diaphragm uilh such l' ,;rce to nuiintain said, Llllllilh zgm no'zu'lully unpresent instance living provided with pro ccting trunnions 15; which hour upon the diuphrugmwusing on opposite sides of the opening through which the stylus-lover passes, suid UUi? lions thus formingelulcruni upon which th ylus-h-wer cun vibrate under the action of he wales of'the ormull undulatory groove of the record upon the stylus 6.

Having claim anddesire to secure by Letters ent thus described my invention, 1

Pat-

1., A talking-machine sound-box having a diaphragm andta casing therefor, a stylus-lever having an integral portion bentat an an gle to the remainder and bearing directly upon said'diaphragm, with a resilient bar extending substantially parallel to the diaphragm and forming an elastic connection between said st'y s-lover and the side of the diaphragm-easing opposite that beyond which the saidflever projects, said connection extending from its point of attachment to the stylus-lever in. a direction opposite thereto and in'iparting resiliency to said lever, substantially as described.

2. A talking-imichine sound-boxhaving a diaphragm and a casing ver bearing upon the diaphragm, a resilient bar extending substantially parallel to the diaphragm and crossing the diaphragm-casing in the semedircction as said stylus-lever,

said bar providing a mounting for the lever, substantially as described.

3. A talking-machine sound-box having a the being exerted to prevent lateral movement of said lever.

in testimony whereof I have signed my name to this specification m the presence of 1 two subscribing witnesses. therefor, a stylus-lc- EDWARD D. GLEASON.

' Witnesses:

F. E. BECHTOLD, Jos. H. KLEIN. 

